Browsing Institutt for geovitenskap og petroleum by Title
Now showing items 1614-1633 of 2535
-
Operation of Norwegian Hydropower Plants and Its Effect on Block Fall Events in Unlined Pressure Tunnels and Shafts
(Peer reviewed; Journal article, 2021)The main objective of this study is to investigate the effect of hydropower plant operation on the long-term stability of unlined pressure tunnels of hydropower plants in Norway. The authors analyzed the past production ... -
Operational Aspects of Sand Control
(Master thesis, 2010)Historically, means of sand control have been utilized in hydrocarbon recovery since before 1930. Guide lines for establishing a successful design and installation have been developing as a function of experience and better ... -
Operational Procedure for permanent P&A of Subsea Wells
(Master thesis, 2015)All oil-and gas wells ever drilled on the Norwegian continental Shelf will be abandoned at some point. The operating companies are entitled ensure no leaking to the surface from the reservoir in an eternal perspective ... -
Optimal Drilling and Completion of Deep ERD Wells
(Master thesis, 2013)In this Master Thesis well design for deepwater ERD wells have been reviewed. These wells present new challenges for the industry, which creates high demands for well design and materials. The constant push for deeper ... -
Optimal preventive policies for parallel systems using Markov decision process: application to an offshore power plant
(Journal article; Peer reviewed, 2023)This work proposes a Markov Decision Process (MDP) model for identifying windows of opportunities to perform preventive maintenance for multi-unit parallel systems subject to a varying demand. The main contribution lies ... -
Optimal time decay of the Boltzmann equation with frictional force
(Journal article; Peer reviewed, 2011)In this paper, we use the combination of energy method and Fourier analysis to obtain the optimal time decay of the Boltzmann equation with frictional force towards equilibrium. Precisely speaking, we decompose the equation ... -
Optimal utilisation of unbound crushed aggregates for road construction
(Doctoral thesis, 2020)Aggregates are construction materials produced from non-renewable rock resources. Because high-quality aggregate resources have limited availability, utilisation of aggregates should be considered carefully to prevent ... -
Optimal Well Inflow Modelling
(Master thesis, 2021)Horisontale brønner (HWs) er utplassert i hydrokarbonreservoarer for å øke reservoarets kontringsområde og dermed utvinning. Trykktap langs brønnens lengde, og reservoarets heterogenitet skaper en ubalansert brønninnstrø ... -
Optimalisering av kontraktstrategi for injeksjonsarbeider
(Master thesis, 2021)Injeksjon i berg er et veletablert prinsipp for å redusere innlekkasjen til bergrom i Norge. Likevel er manglende kunnskap og utilstrekkelige kontraktuelle hjelpemidler for å håndtere usikkerhet tilknyttet innlekkasjer, ... -
Optimalisering av tettestrategi for tunneler på Fornebubanen
(Master thesis, 2020)Abstract will be available on 2023-06-10 -
Optimisation of Intelligent Wells in a Reservoir Simulation Model - Part 2
(Master thesis, 2010)This work is the second part of a project to investigate what is possible in terms of control and optimization of a multi-lateral well within a greater field model, using the proprietary reservoir simulator Eclipse. In ... -
Optimization and engineering geological evaluation of headrace tunnel system of Akavreta HPP in Georgia
(Master thesis, 2022)Current thesis is about designing and evaluating Akavreta HPP headrace tunnel system in Georgia. Akavreta HPP is 20 MW hydropower project located in Adjara region. There are three dams, which collect water from three ... -
Optimization and Stability Analysis of Waterway System and Underground Powerhouse Cavern for Himchuli Dordi HPP, Nepal
(Master thesis, 2018)Potential for hydropower development in Nepal is well established, and exploitation of the resource with economical and sustainable design is the need of the time. Unlined pressure tunnel is proven safe and economical ... -
Optimization Based Design of Subsea Processing Considering Reliability and Maintenance
(Master thesis, 2022)Undervannsteknologi gir mulighet for å utvikle små marginale felt som ofte har liten profittmargin og kort feltlevetid ved hjelp av kosteffektive løsninger. Det er derimot viktig at disse løsningene oppfyller kravene til ... -
Optimization of Coal Production Based on the Modeling of the Jig Operation
(Peer reviewed; Journal article, 2023)This paper presents the jig operating properties of the selected final parameters of the hard coal concentrate. The quality parameters of the product, such as the yield and ash content, were evaluated in terms of the ... -
Optimization of Gas Production for Songo Songo Field through Reservoir Characterization
(Master thesis, 2016)This thesis focused on optimizing production of Songo Songo field in Tanzania through adding number wells in the field. The work started by first characterizing the reservoir using available production data and any available ... -
Optimization of hydraulic program for liner drilling
(Master thesis, 2011)Drilling with casing and liner are unconventional drilling methods developed to reduce both the non-productive time spent on drilling operations and drilling time in general. A casing or liner string is used as the ... -
Optimization of Inflow Control Devices with Respect to Productivity in Different Zones
(Master thesis, 2009) -
Optimization of Liquid-Rich Shale Wells
(Master thesis, 2013)The development of horizontal well technology and hydraulic fracturing have made production from shale and other low permeable rocks possible and revolutionized the oil and gas business. Shales produce typically with very ... -
Optimization of NMR Data Utilization on Valhall - a Brown Chalk Oilfield
(Master thesis, 2015)The Valhall field started production in 1982 and has been producing since. A vast amount of data has been gathered and interpreted since then. Because of its complexity, there are still many questions left unanswered. Some ...